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Finding the Fourth Proportional to 755.81, 1,133.94 and 625.22

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Solution

The fourth proportional to 755.81, 1,133.94 and 625.22 is: 938.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    755.81 : 1,133.94 = 625.22 : x
  2. Step 2: Convert to fraction form
    755.81/1,133.94 = 625.22/x
  3. Step 3: Cross multiply
    755.81x = 1,133.94 × 625.22
  4. Step 4: Simplify right side
    755.81x = 708,956.30
  5. Step 5: Solve for x
    x = 708,956.30/755.81
  6. Step 6: Final answer
    x = 938.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.